Mario Williams, DE/OLB, Previous Team: Houston Texans

Williams should have never made it to the free-agent market, but somehow the Texans let him slip through their fingers.

Williams has been a defensive force that has helped take a subpar Texan defense from mediocrity to one of the best in the league.

But "Super Mario" wasn't always such a well-liked commodity. In the 2006 draft, he was picked with the first overall pick, surprising analysts who thought the Texans would take Heisman trophy winner Reggie Bush. Some people at the time considered it the worst decision in the Texans short five-year history.

Ironically, the decision to select Williams first was so that he could help control Peyton Manning and the high-powered Colts' offense. With Arizona, the Seahawks' divisional rival, as a favorite in the Manning sweepstakes, Mario Williams could be an excellent pickup.

Williams has been a defensive power since being drafted, holding the Texans' single-season sack record and going to the Pro Bowl twice.

Carl Nicks, OG, Previous Team: New Orleans Saints

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Carl Nicks is likely the top guard in the league. Another, like Mario Williams, who should have never made it to the free-agent market.

A hugely valuable player available, Nicks led an offensive line that allowed the second-least amount of sacks in the league. His leadership on the line gave Drew Brees enough time to pick apart defenses leading up to his record-breaking season.

With all the injuries to the Seattle front line, Nicks could provide the stability to a line that allowed the fourth-most sacks in the league last year.

The Seahawks may have to dish out a hefty sum to pick up this All-Pro guard, but if they are willing to, they would be receiving one of the best offensive lineman in the game today.

Marques Colston, WR, Previous Team: New Orleans Saints

The last dream pickup is one of Drew Brees' previously favorite targets, Marques Colston.

I know, I know, the Seahawks have enough wide receivers. But with such a high quality receiver on the market, it is hard to resist him.

This Hofstra alum is the third player on this list that was picked in the 2006 NFL draft and is hitting the peak of his career.

Colston can instantly make T-Jax a better quarterback, but if the 'Hawks can find a capable QB, Colston could easily be an All-Pro player.

He may not fill a major need for the Seahawks, who have an abundance of young talent at the wideout position, but he does bring substantial skill and leadership that could enhance this offense tremendously.